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Use ARM's faster math functions on non-tiny builds

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This commit is contained in:
Justine Tunney 2022-07-11 18:34:10 -07:00
parent 3c10fb5580
commit 4814b6bdf8
58 changed files with 3760 additions and 361 deletions
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10
test/libc/tinymath/log2_test.c
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@ -18,6 +18,7 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/math.h"
#include "libc/runtime/gc.internal.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
#include "libc/x/x.h"
@ -54,3 +55,12 @@ TEST(log2f, test) {
EXPECT_STREQ("-NAN", gc(xdtoaf(log2f(-1))));
EXPECT_STREQ("-NAN", gc(xdtoaf(log2f(-2))));
}
BENCH(log2, bench) {
double _log2(double) asm("log2");
float _log2f(float) asm("log2f");
long double _log2l(long double) asm("log2l");
EZBENCH2("log2", donothing, _log2(.7)); /* ~9ns */
EZBENCH2("log2f", donothing, _log2f(.7)); /* ~6ns */
EZBENCH2("log2l", donothing, _log2l(.7)); /* ~21ns */
}